/* ── 404 page ──────────────────────────────────────────────────────────────── */
.error-404-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.error-404-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.5;
}
.error-404__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-24) var(--space-8);
  max-width: 600px;
  margin: 0 auto;
}
.error-404__number {
  font-family: var(--font-headings);
  font-size: clamp(6rem, 18vw, 14rem);
  font-weight: 700;
  color: var(--color-orange);
  line-height: 1;
  position: relative;
  animation: glitch 4s ease-in-out infinite;
  user-select: none;
}
@keyframes glitch {
  0%, 92%, 100% { transform: translate(0); text-shadow: none; }
  93%  { transform: translate(-2px, 1px);  text-shadow:  2px 0 #ff6600, -2px 0 #fff; }
  95%  { transform: translate(2px, -1px);  text-shadow: -2px 0 #ff6600,  2px 0 #fff; }
  97%  { transform: translate(-1px, 2px);  text-shadow: 0 2px #ff6600; }
}
@media (prefers-reduced-motion: reduce) {
  .error-404__number { animation: none; }
}
.error-404__heading {
  font-family: var(--font-headings);
  font-size: var(--font-h2);
  color: var(--color-white);
  margin: var(--space-4) 0 var(--space-4);
}
.error-404__sub {
  color: rgba(255, 255, 255, 0.6);
  font-size: 1.0625rem;
  line-height: 1.7;
  margin-bottom: var(--space-10);
}
.error-404__ctas {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-10);
}
.error-404__search { max-width: 400px; margin: 0 auto; }
.error-404__search-label {
  color: rgba(255, 255, 255, 0.4);
  font-size: var(--font-small);
  margin-bottom: var(--space-3);
}
.error-404__search .search-form {
  display: flex;
  gap: var(--space-2);
}
.error-404__search .search-field {
  flex: 1;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  color: var(--color-white);
  font-size: var(--font-small);
  outline: none;
}
.error-404__search .search-field:focus { border-color: var(--color-orange); }
.error-404__search .search-submit {
  padding: 0.75rem 1rem;
  background: var(--color-orange);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  font-size: var(--font-small);
  transition: background var(--transition-fast);
}
.error-404__search .search-submit:hover { background: var(--color-orange-deep); }